playcanvas/build/playcanvas/src/scene/shader-lib/wgsl/chunks/gsplat/vert/gsplatSource.d.ts

PlayCanvas WebGL game engine

declare const _default: "\nattribute vertex_position: vec3f;         // xy: cornerUV, z: render order offset\nattribute vertex_id_attrib: u32;          // render order base\n\nuniform numSplats: u32;                   // total number of splats\nvar splatOrder: texture_2d<u32>;          // per-splat index to source gaussian\n\n// initialize the splat source structure\nfn initSource(source: ptr<function, SplatSource>) -> bool {\n    let w: u32 = textureDimensions(splatOrder, 0).x;\n\n    // calculate splat order\n    source.order = vertex_id_attrib + u32(vertex_position.z);\n\n    // return if out of range (since the last block of splats may be partially full)\n    if (source.order >= uniform.numSplats) {\n        return false;\n    }\n\n    let orderUV = vec2i(vec2u(source.order % w, source.order / w));\n\n    // read splat id\n    source.id = textureLoad(splatOrder, orderUV, 0).r;\n\n    // map id to uv\n    source.uv = vec2i(vec2u(source.id % w, source.id / w));\n\n    // get the corner\n    source.cornerUV = vertex_position.xy;\n\n    return true;\n}\n";
export default _default;